SketchyLISP Reference |
Copyright (C) 2007 Nils M Holm |
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Conformance: SketchyLISP Extension
Purpose: Compare data with negative result.
Arguments:
A - datum
B - datum
Implementation:
(define (not-equal? a b) (eq? (equal? a b) #f))
Example:
(not-equal? '(a b (c d (e)) f) '(a b (c d (x)) f)) => #t
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